1047459869 has 2 divisors, whose sum is σ = 1047459870. Its totient is φ = 1047459868.

The previous prime is 1047459857. The next prime is 1047459871. The reversal of 1047459869 is 9689547401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047363769 + 96100 = 32363^2 + 310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1047459869 is a prime.

It is a super-2 number, since 2×1047459869² = 2194344354330994322, which contains 22 as substring.

Together with 1047459871, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1047459869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047459769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523729934 + 523729935.

It is an arithmetic number, because the mean of its divisors is an integer number (523729935).

Almost surely, 2^1047459869 is an apocalyptic number.

It is an amenable number.

1047459869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047459869 is an equidigital number, since it uses as much as digits as its factorization.

1047459869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1047459869 is about 32364.4846861494. The cubic root of 1047459869 is about 1015.5760823322.

The spelling of 1047459869 in words is "one billion, forty-seven million, four hundred fifty-nine thousand, eight hundred sixty-nine".